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23 Cards in this Set
- Front
- Back
What structures provide structural durability on a full veneer crown?
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Functional cusp bevel
Planar occlusal reduction |
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Which features provide retention and resistance on a full veneer crown?
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Seating groove
Axial reduction |
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What is the average clinical lifespan of a full cast crown?
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7-10 years
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Which crown type has higher resistance and restention values full cast crown or partial veneer crowns?
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Full Cast Crown
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What are the indications for a full cast crown?
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Cuspal Protection
Retainer for a FPD Non esthetic zone All Axial surfaces have carious involvement The existing restoration involves four or more tooth surfaces |
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What are some different variations of full veneer crowns?
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All Metal
Metal ceramic crown All ceramic crown Reduction amounts (range from 1mm-2mm) |
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T/F
You should place your depth grooves for full veneer crowns on the crest of the triangular ridge |
False
DO NOT place on the crest of the triangular ridge Place along the incline planes |
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What is the occlusal reduction for full veneer crowns?
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1.0 - 1.5 mm
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Which burs do you use to do your planar occlusal reduction?
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Round end taperd diamond and #171 carbide
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What do you use to make F/L depth grooves on a full veneer crown?
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1/2 the diameter of the round end tapered diamond bur
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What is the total axial reduction for a full veneer crown?
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1 mm
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How should you shape the finish line of your interproximal full veneer crown?
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chamfer bevel that follows the contour of the gingiva
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What would overinclination of the buccal surface of a full veneer crown lead to?
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Destroy excessive tooth structure
Decrease retention |
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Which burs do you use to negotiate the interproximal of full veneer crowns?
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Tapered needle to negotiate thru the contact
Thin chamfer bur (torpedo bur) to finesse axial surface |
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Where is the functional cusp bevel placed for a FVC on the mandible?
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Buccal cusp 1.5 mm
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Where is the placement of the functional cusp bevel on the maxillary?
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Lingual cusp 1.5mm
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What could happen if you are missing a functional cusp bevel?
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Overcontouring
Poor occlusion |
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What is the reduction on the Non-supporting cusp of a FVC?
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1.0 mm
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T/F
We want to have crisp angles to make a sharp crown preparation |
False
Round all occlusal line angles and M/D marginal ridges |
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When you are evaluating your FVC preparation for undercuts, what perspective are you viewing from?
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Undercut inspection using one eye from an occlusal view
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What is the occlusal reduction evaluated, using?
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Ball reduction gauge and visual inspection
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What is the purpose of the seating groove in a FVC prep?
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Resistance & retention
Orient the provisional and restoration |
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How should you view your preparation for ideal angle of convergence?
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30cm distance single eye vision
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